#include<stdio.h>
#include<stdlib.h>
int main(void)
{
    long num;
    long sum = 0L;
    int status;
   
    printf("Please enter an integer to be summed.");
    printf("(q to quit):");
    status = scanf("%ld",&num);
    while(status == 1)         
    {
                 sum = sum + num;
                 printf("Please enter next integer (q to quit):");
                 status = scanf("%ld", &num);
    }
    printf("Those integers sum to %ld.\n",sum);
    system("pause");
    return 0;
   
}

很奇怪 status的值怎么会是否==1
请教高手，谢谢。

明白了，谢谢你的回答。